[Bug 320829] [NEW] Bogofilter seems to fail decoding base64

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Matthias Andree (matthias-andree):

Binary package hint: bogofilter-bdb

Description: Ubuntu 8.04.1
Release: 8.04
Package: bogofilter-bdb
Source-Package: bogofilter
Version: 1.1.5-2ubuntu5

During the last days I received a lot of similar spam that passed
bogofilter marked as Ham. Even after tagging a lot of mails (>50) this
was not improved. Neither for already tagged mails nor for new mails.

Looking on the plain mail text I found out that the mails although plain
text with cp1251 formatting were base64 encoded. Thus I first assumed
that bogofilter might be unable of handling base64 encoding. But
actually this is integrated since version 0.10 and should therefore be
still in 1.1.5-2ubuntu5 as I have installed here.

A brief test brought up the following:

Test:
I tagged one of the spam mails using a new database with "bogofilter -s" and compared the database contents (retrieved via "bogoutil -d") with another new database were I tagged the same mail but with decoded body and subject.

Result:
In the first DB only information on header fields was present. In the second DB there was also information regarding the body of the mail.

Thus I conclude that bogofilter did not manage to decode the mail -
whereas KMail does this flawlessly.

I attach an mbox folder with a selection of mails.

** Affects: bogofilter
     Importance: Undecided
         Status: Confirmed

** Affects: bogofilter (Ubuntu)
     Importance: Undecided
         Status: Confirmed

-- 
Bogofilter seems to fail decoding base64
https://bugs.launchpad.net/bugs/320829
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